MAFI MT 25, Maintenance Manual

Page: 51 / 128

MAINTENANCE WORK
COOLING SYSTEM
Maintenance manual MT 25 / 30 YT 49
Add coolant
Add coolant only when the motor is at standstill.
X
Unscrew the drain valve from the drain valve.
X
Screw the protection cap onto the drain valve.
X
Attach the underrun protection device.
Fig. 24: Heater/ventilation
1 Blower switch
2 Switch “air conditioning unit” – optional
3 Switch “heater”
X
Check that the heater's regulator is set to maximum heat
output (only for MT without air conditioning unit).
The ventilation of the heating system is thereby ensured dur-
ing the filling.
X
Slowly fill coolant through the opening of the equalising res-
ervoir until the fill level lies between the “MIN” and “MAX”
markings.
Make sure that no air bubbles develop and that the air in the
system can escape through the opening.
X
Start the motor.
Run the motor at low speed.
3
The cooling system is vented.
X
Turn the motor off when no more air bubbles rise to the sur-
face.
X
Check the coolant level once more, add more coolant if nec-
essary and start motor again.
X
Close the cooling system with the cap at the expander tank.
The system needs to be filled completely.